I have been running the Golden Master version of iOS 11 (15A372) for the past two days. Reminders, Notes, Contacts, and eMail sync perfectly. The only thing that doesn't sync is the Safari tabs (iCloud tabs). I tried doing what's recommended in cases like this: quit Safari, make a backup of the Bookmarks and then delete all the Safari settings, logging out of iCloud in all the devices (Mac mini, iPhone, and iPad), restarting all the devices, and logging into iCloud in all the devices again. After I did all that and let everything sync for a while, I could see the Mac's tabs in the iOS devices, and I could never see the iOS devices tabs on the Mac. I use that feature pretty much every day. I like to switch from the Mac to the iPad and back throughout the day. I am *not* going to upgrade from El Capitan. I'm still using Adobe CS6 and I don't want to risk it not running anymore. I do real work on my Mac: I edit photos with it. If I cannot find a solution within the next few days I will downgrade to iOS 10 while I still can. It is a shame because I like the Control Center more in iOS 11. Any ideas?